Jeremiah 47:1, 4

The word of the LORD that came to Jeremiah the prophet against the Philistines, before that Pharaoh smote Gaza.

because of the day that cometh to spoil all the Philistines, and to cut off from Tyrus and Zidon every helper that remaineth: for the LORD will spoil the Philistines, the remnant of the country of Caphtor.